# 三达电子 SANDA vs Mainpaper Sales

The clearest difference is iOS requirement: 三达电子 SANDA at 12.0 against Mainpaper Sales's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 三达电子 SANDA | Mainpaper Sales |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 14 MB | 29 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DENSEN INFORMATICA SL](https://appshunter.io/developer/1498606556) | [中汇文具](https://appshunter.io/developer/1560265223) |

## What reviewers say

### 三达电子 SANDA

[App page](https://appshunter.io/ios/app/sanda/id1100313025)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mainpaper Sales

[App page](https://appshunter.io/ios/app/mainpaper-sales/id1629021179)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 三达电子 SANDA free?

三达电子 SANDA is free to download, with no in-app purchases.

### Is Mainpaper Sales free?

Mainpaper Sales is free to download, with no in-app purchases.

### Do 三达电子 SANDA or Mainpaper Sales have ads?

Neither 三达电子 SANDA nor Mainpaper Sales shows ads.

### Which is updated more often, 三达电子 SANDA or Mainpaper Sales?

三达电子 SANDA ships an update fortnightly, and Mainpaper Sales fortnightly. Most recently, 三达电子 SANDA was updated on October 26, 2026 and Mainpaper Sales on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*